From: Jeff Meister <nanaki@gmail.com>
To: Leo White <lpw25@cam.ac.uk>
Cc: Matej Kosik <5764c029b688c1c0d24a2e97cd764f@gmail.com>,
OCaml <caml-list@inria.fr>
Subject: Re: [Caml-list] strange typechecking result
Date: Fri, 22 Feb 2013 15:09:41 -0800 [thread overview]
Message-ID: <CAHaHOqRY55cUFeou=qe96d2AOsNqBWj3_qazJoYxYevMhsGBtg@mail.gmail.com> (raw)
In-Reply-To: <Prayer.1.3.5.1302222106030.20720@hermes-1.csi.cam.ac.uk>
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As I understand it, polymorphic recursive functions require type
annotations because inferring their types is undecidable in the general
case.
On Fri, Feb 22, 2013 at 1:06 PM, Leo White <lpw25@cam.ac.uk> wrote:
> I would like to ask:
>>
>> - Where is that restriction explained?
>> (I've searched Ocaml reference manual for "monomorphic" but nothing
>> relevant seemed to come up)
>>
>> - Where are things like:
>>
>> 'a. 'a -> unit
>>
>> described?
>>
>>
> I'm not sure if the restriction is explained anywhere but the solution is
> described in:
>
> http://caml.inria.fr/pub/docs/**manual-ocaml-4.00/manual021.**html#toc79<http://caml.inria.fr/pub/docs/manual-ocaml-4.00/manual021.html#toc79>
>
> Regards,
>
> Leo
>
>
> --
> Caml-list mailing list. Subscription management and archives:
> https://sympa.inria.fr/sympa/**arc/caml-list<https://sympa.inria.fr/sympa/arc/caml-list>
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>
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prev parent reply other threads:[~2013-02-22 23:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-22 17:50 Matej Kosik
2013-02-22 18:33 ` Leo White
2013-02-22 20:14 ` Matej Kosik
2013-02-22 21:06 ` Leo White
2013-02-22 23:09 ` Jeff Meister [this message]
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